The Sawtooth is a great example of a performance-driven style of soft shell, although this time without Olympic track-star styling. I didn’t expect the lightweight fabric to be so warm, but during more energetic activity, it really kept the heat in. During a snow-bound jaunt up Snowdon’s Pyg Track, with only a pair of gloves on (and trousers, obviously) the Sawtooth eliminated wind-chill completely and retained body heat. Only at a summit point rest did I have to add extra layers. The high chest pockets double up as vents when it does get too warm, and they have the added benefit of being deep enough to keep kit in even when unzipped. The whole jacket is incredibly stretchy too, allowing it to move with you – useful for reaching as well as keeping it close-fitting.